VAR of black-chinned hummingbird flying off its twig perch (underexposed, but gets better) and alighting on another slender branch, rubbing its long beak against wood, wings still, then whirring off to another branch, where it flexes its wings and rubs its beak on wood again, flying off. MCU (underexposed at start, but improves) of black-chinned hummingbird preening itself on slender branch until another hummer challenges him, both flying off. MCU of same hummingbird preening on branch, suddenly flying off. (42837)